Evidence reported by bqal for item elementsquaterni00hamirich on May 22, 2006; no visible notice of copyright and date found; stated date is 1866; not published by the US government; Have not checked for notice of renewal in the Copyright renewal records.
February 23, 2009 Subject:
good crisp scanning job
This is just a review of the Archive's execution of the scanning job. (Hamilton's reputation is what it is, far beyond my poor power to add or detract.)
Google Book Search happens to have posted their own PDF (B&W in their case) of this identical volume from UCB's Astro library. Even though Google's pixel size appears to be a tad finer, the Archive's scanning job is FAR more successful optically. Enlarged views of the title page (Hamilton's fine-print credentials) show that there's just no comparison. The IA download is more megabytes but your eyes will thank you for downloading it.